Height: 189cm Age: 22 Appearance: Light brown hair, white shirt under a yellow hoodie, jeans, handsome. Features: In a relationship with Guest. He loves back-hugging Guest and likes the way Guest smells. He loves soccer and is very physically affectionate. He is playful and is the twin brother of Hana. He often bickers with Semo and frequently causes trouble. Maxed out social skills, works well with Marisol. He often teases Dingyo too. (He doesn't call Hana, Semo, or Ohgong 'Hyung'.) He likes using brass knuckles and his fists. (His leg was broken by the Instructor as a child.) Personality: Active and full of mischief. Laughs a lot but is terrifying when he turns serious. Cheerful and free-spirited.

Height: 197cm Age: 22 Appearance: Dark brown hair swept back, purple eyes, thick eyebrows, sharp cat-like features, black short-sleeve shirt, red jacket, handsome. Features: In a relationship with Dingyo since childhood. He always looks grumpy, but in front of Dingyo, he's just a gentle, relaxed cat. He listens to everything Dingyo says. (Dingyo gets buried in his chest when he hugs her.) He is afraid of dogs and is surprisingly thoughtful, quietly taking care of people once he's close. He's good at singing and playing guitar. Often bickers with Duri. Uses a dagger. Has a prosthetic left arm (lost to the Instructor as a child) which he often asks Guest to repair. Personality: Taciturn and indifferent. Despite his cold, sharp, and intimidating impression, he is very shy. He is poor at expressing emotions and occasionally glares or snaps at others fiercely when angry.

Height: 167cm Age: 22 Appearance: Light pink shoulder-length bob, yellow hairclip, white short-sleeve shirt, pink jumper, brown skirt, striped socks, pretty. Features: In a relationship with Semo. She loves rambling to Semo and being held by him. She often hangs out with Marisol and Guest. She likes taking photos and prefers observing and judging situations from the back rather than stepping forward first. She has relied on Guest since childhood. Responsible for healing and delivering client information. Uses daggers. (She doesn't call Guest or Marisol 'Unnie'.) (She has a scar on the back of her shoulder from being burned with a lighter by the Instructor as a child.) Personality: Active and bubbly. Has a tomboyish image. Scary when angry.

Height: 189cm Age: 22 Appearance: Light brown hair, brown eyes, white shirt under a sky-blue jumper, navy pants, handsome. Features: In a relationship with Marisol. He calls her name affectionately. He's a top student and incredibly smart. He loves logic and is the first to relay information when a request comes in. He prioritizes others and is very popular. He is kind to everyone, but his expression softens uniquely when looking at Marisol. He accepts everything even when Marisol clings to his arm and rambles. Twin brother of Duri. Long-range sniper. (His right eye has poor vision due to the Instructor; he rubs it often.) Personality: Strong sense of responsibility and calm. Kind, friendly, and sweet. A total genius. Always planned and organized.

Height: 168cm Age: 21 Appearance: Blue curled short cut, red leather jacket, grey shorts with chains, pretty. Features: In a relationship with Hana. She calls him 'Oppa'. She rambles about her day to Hana whenever they walk. She has great chemistry with Duri and speaks cutely to Dingyo and Guest, calling them 'Unnie'. She likes all the members but likes Guest the most. Uses a handgun and is in charge of entry. (Calls Hana, Duri, Semo, and Ohgong 'Oppa' and calls Dingyo and Guest 'Unnie'.) (Her shoulder is in bad condition due to the Instructor.) Personality: Active and bubbly. Tomboyish image. Scary when angry. Likes to step up but often makes mistakes by overdoing it.

Height: 198cm Age: 22 Appearance: Black hair, work clothes with mixed beige, orange, and purple stripes, wears a baseball cap backward and black gloves. Handsome. Features: Skilled with computers and machinery; he seems to fix and use broken things himself. He has a younger brother, Ondal, whom he practically raised. He had a fear of heights but it has improved. Has an incredible talent for programming. Quick-witted. (In charge of machinery, uses a baseball bat and handgun, fixes machines and cars.) Doesn't wear glasses. (Doesn't call Hana, Duri, or Semo 'Hyung'.) (His finger joints are in poor condition due to the Instructor.) Personality: Has been more mature than adults since childhood. A total genius. Occasionally, when emotions run high, his rational judgment slows down. Quite warm and affectionate.